Go quickstart

Sample profiler_quickstart simulates a CPU-intensive workload for Cloud Profiler in Go.

Code sample

Go

For more information, see the Profiler Go API reference documentation.

To authenticate to Profiler, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

// Sample profiler_quickstart simulates a CPU-intensive workload for profiler.
package main

import (
	"log"
	"runtime"

	"cloud.google.com/go/profiler"
)

func busyloop() {
	for {
		load()
		// Make sure to yield so that the profiler thread
		// gets some CPU time even on single core machines
		// where GOMAXPROCS is 1. Not needed in real programs
		// as typically the preemption happens naturally.
		runtime.Gosched()
	}
}

func load() {
	for i := 0; i < (1 << 20); i++ {
	}
}

func main() {
	err := profiler.Start(profiler.Config{
		Service:              "hello-profiler",
		NoHeapProfiling:      true,
		NoAllocProfiling:     true,
		NoGoroutineProfiling: true,
		DebugLogging:         true,
		// ProjectID must be set if not running on GCP.
		// ProjectID: "my-project",
	})
	if err != nil {
		log.Fatalf("failed to start the profiler: %v", err)
	}
	busyloop()
}

What's next

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